<template>
  <div class="test-wrapper">
    <el-tree :data="data" show-checkbox node-key="id" :props="defaultProps" @check="check"></el-tree>
    <!-- @current-change="currentChange" -->
    <!-- @check-change="checkChange" -->
  </div>
</template>

<script>
export default {
  components: {},
  props: {},
  data() {
    return {
      data: [
        {
          id: 1,
          label: '一级 1',
          children: [
            {
              id: 4,
              label: '二级 1-1',
              children: [
                {
                  id: 9,
                  label: '三级 1-1-1'
                },
                {
                  id: 10,
                  label: '三级 1-1-2'
                }
              ]
            }
          ]
        },
        {
          id: 2,
          label: '一级 2',
          children: [
            {
              id: 5,
              label: '二级 2-1'
            },
            {
              id: 6,
              label: '二级 2-2'
            }
          ]
        },
        {
          id: 3,
          label: '一级 3',
          children: [
            {
              id: 7,
              label: '二级 3-1'
            },
            {
              id: 8,
              label: '二级 3-2'
            }
          ]
        }
      ],
      defaultProps: {
        children: 'children',
        label: 'label'
      }
    }
  },
  computed: {},
  watch: {},
  created() {},
  mounted() {},
  activated() {},
  deactivated() {},
  updated() {},
  destroyed() {},
  methods: {
    check(a, b) {
      console.log('a', a)
      console.log('b', b)
      console.log([].concat(b.checkedKeys, b.halfCheckedKeys))
    },
    checkChange(a, b, c) {
      console.log('a', a)
      console.log('b', b)
      console.log('c', c)
    },
    currentChange(a, b) {
      console.log('a', a)
      console.log('b', b)
    }
  },
  filters: {}
}
</script>
<style scoped>
</style>